Driving mechanism for the comb cylinders of rotary combing machines



April 1 1924. 1,488,495

I P. A. HELMBOLD DRIVING MECHANISM FOR THE COMB CYLINDERS OF ROTARY COMBING MACHINES f Fig.2.

Filed Dec. 6, 1920 7 lnvenror.

P ul Auguste Helrnb old YHzMe MW Patented Apr. 1, 1924.

UNITED STATES PATENT OFFICE;

PAUL AUGUSTE HELMBOLD; 0F VOI-IWINKEL, GERMANY.

DRIVING MECHANISM FOR THE COMIB CYLINDERS OF ROTARY C(IMBING MAdI-IINEfi.

Application filed December 6, 1920. Serial No. 428,531.

To all whom it may concern Y Y Be it known that I, PAUL AUoUs'rn HELM- BOLD, a citizen .of the French Republic, re-

siding at Vohwinkel, Rhineland, Germany,

have invented a new anduseful Improvement in Driving Mechanism for the Comb Cylinders of Rotary Combing Machines, of

which the following is a specification.

This invention consists in an improved driving arrangement for the comb cylinder or rotary combing machines of the type having swingingnippers which remain stationary or almost stationary during the time the comb is in action. y

In accordance with the present invention the comb cylinder receives a variable speed in such a manner that it is rotated more slowly in correspondencewith the increasing resistance which the more closely positioned needles of the successive comb shafts ofthe comb segment find in the tufts of fibres, and makes up for the lost time as soon asthe comb segment has no further work to do. This enables a substantially higher production of the combing machine to be obtained. If for example the peripheral speed of the comb segment is reduced by five percent during the time the fine needles arein action and on the other hand the peripheral speed during the time that the needles are not working is increased by only fifteen percent, an average of five per cent higher speed of the comb cylinder is obtained and conse quently the roduction of the machine is increased by ve per cent. 7

Further advantages of the invention are that smoother combing of the tufts of fibres by the closely-positioned needles takes place; that the fine rows of needles are subjected to less tear and wear; and that finally a by-product is obtainedl which contains fewer torn fibres than when the comb cylinder is driven in the hitherto usual manner.

In the accompanying drawing I have illustrated two suitable constructions of driving mechanism, but I make no claim to that mechanism per se as similar mechanism for imparting a variable speed from one shaft to another is well known and has been employed to impart a variable speed to a comb cylinder for a different purpose from mine. My invention consists in the particular manner in which the variable motion is imparted so that the aforesaid higher production and advantages are obtained.

Figs. 1 and 2 show one of the said constructions; and

Figs?) and 4 the other.

Fig. 5 is a diagrammatic view showing the position of the cylinder comb at the time that the peripheral speed thereof is reduced.

Fig. 6 illustrates the at the time that the creased.

Inasmuch as theinvention relates simply to the mechanism for controlling the speed of the comb cylinder at different points in its rotative movement and for a particular purpose I have not thought it necessary to illustrate herein a combingmachine-buthave indicated diagrammatically in Figs. 5 and position of the parts speed thereof is in 6 the comb'cylinder at n having teeth; onv

a portion of its periphery and have indi cated at p the nippers which hold the lap 3 while the fringe u is being combed. V indicate the usual detaching rollers. parts are or may be all of usual construction and operate in the usual manner, it being understood that the needles '2- are" soarranged that those in the coarser and more widely spaced than the needles in the succeeding row, the needles in the last row being finest and closest, together. i 1

As stated above the present invention relates to means operating to retard the rotative movement of the comb cylinder while the fine needles are acting on the fringe u as shown in Fig. 5 and of the comb cylinder when the needles are not working as shown in Fig.

wheel 0 two studs 03 are fixed at one side at diametrically opposite points, upon which toothed wheels .2 together with eccentrics f formed in one piece therewith are rotatably front row are These to increase the speed mounted. The rods 9 of these eccentrics engage lever arms it which .are keyed on the comb cylinder shaft 0.. The toothed wheels 6 are in engagement with a stationary toothed wheel '2' arranged in the machine.

In this construction the rotation of the toothed wheel a is transferred to the comb cylinder shaft thro the rods 9, h-,and a of the same is bro-ug simultaneous rotation caused by the rolling 0 the wheel i.

In the construction device shown in Figs. 3 mined variation of spee inder shaft a is obt tween it and the (1 mission mechanism cons wheels Zc, Z, the movemen mitted through the pair of toothed y to the comb cylinder shaft a an to the comb cylinder itself.

The mechanism for varying the comb cylinder timed with relation to the cylinder and the nipp eed commences af have entered th fine needles come into invention, therefore, t cylinder is re are in action, this time being indi the comb cylinder enough-to carry 1 work and the parts in Fig. 6, then the sp the comb cylinder than make up for t when the parts are in the Fig. 5.

With slow down the spec are acting thus subjectin in sp shaft 0, is so arrange e fringe '11 an action and with this type having swinging nip pers which remain he speed of the comb, practically stationary during the time the hile the fine needles comb is in actionand in which'the comb 0Y1?- rts at inder has a plurality of rows of needles cated in Fig. 5. V 'Xfter with the needles in the last rows positionedhas been rotated far more closely together than those in the first fine needles clear of the rows, the combination with a shaft on which are in ,the position shown the comb cylinder is mounted, of a driving eed of the shaft (,1, and shaft rotating at a uniform speed, and yalerated' to more riablespeed mechanism operatively'connect he reduction of the speed ing said shaft and causing the comb cylin position shown in der shaft to have a reduced speed while the the position of the pa g them to less wear ugh the eccentrics f and and tear and producing a better product and fixed alteration of speed at the same time to increase the production ht about through the because when the needles are out of the work of the eccentrics f v the comb cylinder maybe speeded up suff the wheels 6 upon ficiently to more than make up for the loss of speed during the combing with theyfine of the new driving needles.

and l a predeterhat- I claim is: 7 d of the comb cyl- 1. In a rotary combing machine of the l by interposing be type having swinging nippers which remain riving shaft ba transpractically stationary during the time the isting of eccentric comb is in action, the employment of means t of which is transfor imparting a variable speed tothe comb wheels m, cylinder from auniformly rotating shaft in d thereby such a manner that in each. revolution the said cylinder is rotated more and more'slowthe speed of ly as the resistance to the successive rowsof d and needlesincreases and the lost time is made-up action of the comb by an acceleration ofthe speed as soon as the that the reduction needles are clear of the work, substantiallyter the coarse needles as described-and for thepurposeiset forth.

d before the 2. In a rotary combing mach-inc of the more-closely positioned needles are in acthis construction it is possible to tion, and an accelerated speed whilethe need while the fine needles dles are clear of the work.

PAUL AUGUSTE HELMBOLD 

